Power Input: 800 WattsImpact Energy: 2.7 to 3.1 Joules (depending on the exact sub-model, giving it high concrete-shattering force)Max Drilling Capacity: Concrete up to 26mm, Wood up to 30mm, and Steel up to 13mm.Chuck System: SDS-Plus for quick, tool-free slotting of hammer bits and chisels.Speed Control: Variable speed trigger with forward and reverse directional rotation.